WO2013143939A1 - Device for inductively transmitting power - Google Patents

Device for inductively transmitting power Download PDF

Info

Publication number
WO2013143939A1
WO2013143939A1 PCT/EP2013/055812 EP2013055812W WO2013143939A1 WO 2013143939 A1 WO2013143939 A1 WO 2013143939A1 EP 2013055812 W EP2013055812 W EP 2013055812W WO 2013143939 A1 WO2013143939 A1 WO 2013143939A1
Authority
WO
WIPO (PCT)
Prior art keywords
unit
transmission
coil
primary
vehicle
Prior art date
Application number
PCT/EP2013/055812
Other languages
German (de)
French (fr)
Inventor
Josef Krammer
Jens Berger
Original Assignee
Bayerische Motoren Werke Aktiengesellschaft
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to DE102012205285.2 priority Critical
Priority to DE102012205285A priority patent/DE102012205285A1/en
Application filed by Bayerische Motoren Werke Aktiengesellschaft filed Critical Bayerische Motoren Werke Aktiengesellschaft
Publication of WO2013143939A1 publication Critical patent/WO2013143939A1/en

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J5/00Circuit arrangements for transfer of electric power between ac networks and dc networks
    • H02J5/005Circuit arrangements for transfer of electric power between ac networks and dc networks with inductive power transfer
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/0069Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to the isolation, e.g. ground fault or leak current
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
    • B60L53/12Inductive energy transfer
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS
    • G01V3/00Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/08Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
    • G01V3/10Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00Adaptations of transformers or inductances for specific applications or functions
    • H01F38/14Inductive couplings
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/60Circuit arrangements or systems for wireless supply or distribution of electric power responsive to the presence of foreign objects, e.g. detection of living beings
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/90Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00Control parameters of input or output; Target parameters
    • B60L2240/10Vehicle control parameters
    • B60L2240/36Temperature of vehicle components or parts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2270/00Problem solutions or means not otherwise provided for
    • B60L2270/10Emission reduction
    • B60L2270/14Emission reduction of noise
    • B60L2270/147Emission reduction of noise electro magnetic [EMI]
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage for electromobility
    • Y02T10/7005Batteries
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage for electromobility
    • Y02T10/7072Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10Technologies related to electric vehicle charging
    • Y02T90/12Electric charging stations
    • Y02T90/122Electric charging stations by inductive energy transmission
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10Technologies related to electric vehicle charging
    • Y02T90/14Plug-in electric vehicles

Abstract

The invention relates to a device for inductively transmitting power, comprising a primary unit (1) with a primary coil (6) and comprising a secondary unit (2) with a secondary coil (6). The primary coil generates a magnetic transmission field (8) in a transmission region between the primary unit and the secondary unit. The device comprises a metal detector unit, and the metal detector unit is suitable for detecting a metal object which can be found in the transmission region.

Description

 Device for inductive power transmission

The invention relates to a device for inductive power transmission, a

Primary unit comprising a primary coil and a secondary unit with a secondary coil and wherein the primary coil is a magnetic transmission field in one

Transmission area between the primary unit and the secondary unit generated.

Inductive power transmission systems are known from the prior art. It is for example in the document FR 2 947 114 A1 an induction charging device for a

Vehicle for charging an electrical energy storage described. The

 Induction charging device consists of a ground unit with a primary coil and a vehicle unit with a secondary coil. The distance between the two coils is about 0.1 m when charging. An induction charging device for an electric vehicle is designed to carry several kilowatts of power.

It is an object of the invention to describe an improved device for energy transmission.

This object is achieved by a device according to claim 1 .. Advantageous

Embodiments and developments of the invention will become apparent from the dependent claims. According to the invention, the device comprises a metal detector unit which is suitable for detecting a metallic object located in the transfer area.

In the case of inductive power transmission, for instance for charging an electric vehicle, such high field strengths prevail in the transmission range that a metallic object experiences strong heating due to induced eddy currents. It is advantageous, metallic

To detect objects in the transmission area or in the vicinity of the transmission area early, ie before it can come to such a warming. According to a preferred embodiment of the invention, the metal detector unit has at least one pair of coils comprising a transmitting coil and a signal coil.

It is advantageous if the metal detector unit can be operated according to the method of pulse measurement and / or according to the method of alternating current measurement with an alternating frequency.

This means that in the transmission area the transmission field of one of the

 Magnetic coil is superimposed magnetic field generated. This field is referred to as a detector array. According to a particularly preferred embodiment, the signal coil has at least two coil elements (10b, 10c) wound in opposite directions, which are electrically connected in series and which is symmetrical to the axis along which the

Transmission field is aligned in the transmission area. This ensures that the signal coil insensitive to the almost homogeneous

Transmission field is. If the two symmetrical coil elements of a

homogeneous magnetic field are interspersed, there is no resulting

Total voltage, since the voltages induced in the two coil elements in series are opposite polarity. Thus, in the reference system of the signal coil, the transmission field is separated and the signal coil is particularly sensitive to changes in the detector field due to metallic objects entering or leaving the transmission region.

According to a further variant, the primary coil generates the transmission field at a transmission frequency which exceeds the frequency of the frequency by a multiple or falls below several times.

This offers an additional possibility to separate residual induction of the signal coil by the transmission field from the induction by the detector field or the detector field disturbed by a metallic object during the signal detection. Advantageous is a system with the inventive device for inductive

Power transmission and with a vehicle to which electrical power is inductively transferable to the vehicle, and which comprises the secondary unit, which is located in the area of the underbody of the vehicle, and in which the primary unit is located outside the vehicle and the metal detector unit of the primary unit or the

Secondary unit is included.

This means that a vehicle is inductively chargeable and the inductive charging device has a metal detector. The metal detector allows the

 To monitor power transfer area between the primary unit and the secondary unit for the presence or intrusion of metallic objects and optionally act on the charging or interrupting. This means a high degree of system security, since metallic objects could be heated by eddy currents at the prevailing to load a vehicle field strengths to auto-ignition.

The invention is based on the following considerations: For inductive power transmission systems, e.g. For charging a vehicle with an electrified powertrain, there are currently no systems that detect metallic objects in the transmission path cost-effectively and reliably. Optical systems such as an infrared camera can easily soil and detect heating of the metallic object only when the metallic object is not covered by a neutral body. Ultrasound systems with suitable dimensions recognize all objects that are sufficiently large in relation to a vehicle. Small or flat objects (e.g., coins) are not recognized. They may even reduce availability, as non-metallic objects may also be detected as metallic. A classic metal detector, such as known from geology, is disturbed by the magnetic and metallic objects present in the system, as well as by the very strong transmission field when charging an electric vehicle, for example.

Inductive systems for power transmission have the disadvantage that they heat metallic objects that are in the transmission path. This results Dangers such as the risk of injury from touching the objects or inflammation of flammable substances in their vicinity.

Therefore, it is proposed to modify the classical metal detector system in some properties in order to use the current, proven system in the inductive transmission path and during the inductive power transmission.

Essential design elements for the functional separation of the detector function from the inductive energy transmission are the design of the detector coils and the use of a frequency range significantly distant frequency range (detector to transmission) with a corresponding signal filtering.

In the following, with reference to the accompanying drawings, a preferred

Embodiment of the invention described. This results in further details, preferred embodiments and further developments of the invention. In detail, show schematically

Fig. 1 device for inductive power transmission with a detector unit

Fig. 2 section of the detector unit

 Fig. 3 signal coil from z- direction

Fig. 1 shows a device for inductive power transmission. The device is suitable, for example, for transmitting electrical power to a vehicle in order to charge approximately an energy store of the vehicle. The device comprises a

Primary unit (1) with a primary coil (6) and a secondary unit (2) with a

Secondary coil (7).

 The primary excitation generates an alternating magnetic field with a transmission frequency which induces a voltage according to the principle of induction at the secondary coil. This voltage can be used in the vehicle as a charging voltage. The alternating magnetic field is called transmission field.

When using the device for inductively charging a vehicle energy storage, the secondary unit can be integrated in the area of the underbody of the vehicle. The Primary unit is located outside the vehicle and can be integrated, for example, in a vehicle parking space and / or vehicle charging station.

The vehicle is then loadable when the vehicle is located in the area of the vehicle charging station that sufficient spatial coverage of the secondary coil with the primary coil with respect to the x-direction and the y-direction is established. The x-direction and the y-direction moreover relate to those known to the person skilled in the art

Vehicle coordinate system. In this embodiment, the transmission field in the transmission region is aligned along the z-axis and with respect to the z-axis

rotational symmetry metric. It is an alternating field with a frequency called the transmission frequency. During charging, the primary coil generates the transmission field (8), which may be rotationally symmetric with respect to the z-axis. The field area of the transmission field located between the primary unit and the secondary unit during loading is called a transmission area. By using two ferrites (4,5) each at the z-direction of the

 Transmission side remote from the primary or secondary coil, an additional concentration of the transmission field in the transmission range can be achieved. The primary coil and the ferrite (4) are integrated in a first housing (1), the

Secondary coil and the ferrite (5) are integrated into a second housing (2).

In the transmission area is a metal detector unit comprising a transmitting unit (9) and a signal unit (10). Both units are arranged substantially perpendicular to the z-axis in the transmission area. The transmitting unit consists of a multiplicity of transmitting coils, by way of example (FIG. 9a), which faces the same number of signal coils, by way of example (FIG. 10a). This is shown in FIG. 2. Each transmit coil generates a detector array (11) which superimposes the transmission field (8). If a metallic object is in the transmission area or enters the transmission area, the defined detector field experiences a change due to the interaction of the metallic object with the detector field. Instead of the actual detector field of the signal coil is the resulting overlay field detected. Thus, the presence of a metallic object in the detector area is detectable. In the reference system of the signal coil, the superimposition of the detector field with the transmission field also leads to the detection of a field deviating from the detector field, which would suggest the presence of a metallic object. To prevent this, the signal coils are designed in a special way, see Fig. 3. From the viewpoint of the z-axis, each signal coil has two sub-coils (10b, 10c), which are wound in opposite directions and act together electrically in series. Both coil parts are symmetrical with respect to the z axis, so that they are interspersed at the same time due to the rotational symmetry of the transmission field in each case by the approximately same magnetic flux density. An embodiment, for example in the form of an eight ensures such symmetry.

The design of the signal coil according to FIG. 3 ensures that an almost complete compensation of the voltage induced in each partial coil is achieved and thus the total voltage of the signal coil induced by the transmission field is almost minimal. In this way, the influence of the undisturbed transmission field is almost "isolated" from the point of view of the signal coil in the detection.However, the signal coil is sensitive to a local change of the transmission field of the detector field by a metallic object.

The metal detector unit has a plurality of transmitting and signal coils to detect the entire transmission range perpendicular to the z-axis.

The metal detector unit has an operating and evaluation unit.

With the operating unit, the metal detector unit can be operated by the method of pulse measurement and / or by the method of alternating current measurement with an alternating frequency.

The evaluation unit detects the voltage induced at the signal coil in a time-dependent manner and compares this measured voltage with the induction to be expected at the time with respect to the generated detector field. A metallic object calls due to the Overlapping with the detector field shows a clear deviation of the measured voltage with the voltage to be compared.

For the voltage measurement at the signal coil can after another

 Embodiment several transmit coils and signal coils are combined in the form of a series circuit. This makes it possible, with an evaluation all

 Measuring signal coils of the series connection simultaneously. This allows a simplified evaluation unit for the entire detector unit, which however means the loss of a precise localization of the "picking" signal coil in the series string.

Ideally, the AC frequency deviates significantly from the transmission frequency.

 For example, the transmission frequency 150 kHz and the AC frequency 10 kHz. The evaluation unit has a filter, here via a low-cut filter. Through the filter originating from the transmission field Restinduktion on a signal coil in the detector signal of the evaluation is suppressible.

If the geometric design of the signal coils of FIG. 3 and the filter of

 Evaluation unit does not sufficiently suppressed the metal detector unit with respect to the transmission field, the metal detector unit is additionally cyclically operable. This means that the power transmission through the transmission field is alternately reduced or shut off for a short period of time and the metal detector unit is activated.

Within the transmission range, the metal detector unit can be arbitrarily positioned with respect to the z-axis. The detector unit is preferably integrated in the primary unit. An 'alternative preferred embodiment, the detector unit as comprised by the secondary unit. It can also be a detector unit from the primary unit and from the

 Secondary unit includes.

It is also advantageous if the strength of the detector field is adapted proportionally to the distance of the primary unit from the secondary unit along the z-axis in order to detect the entire transmission range with the detector unit. The distance between the primary unit and the secondary unit is essentially given by the ground clearance of the vehicle.

Claims

 claims
Device for inductive power transmission, comprising a primary unit (1) with a primary coil (6) and a secondary unit (2) with a secondary coil (6) and wherein the primary coil a magnetic transmission field (8) in one
 Transmission area between the primary unit and the secondary unit generates, characterized in that
 the device comprises a metal detector unit,
 the metal detector unit is suitable for detecting a metallic object located in the transfer area.
Device according to claim 1,
 characterized in that
 the etaiidetektoreinheit has at least one coil pair, and
 the sputter pair comprises a transmitting coil (9a) and a signal coil (10a)
Device according to claim 2,
 characterized in that
 the signal coil has at least two coil elements (10b, 10c),
 the two coil elements are wound in opposite directions,
 the two coil elements are electrically connected in series, and
 the two coil elements are symmetrical to the axis along which the
Transmission field is aligned in the transmission area.
Device according to one of the preceding claims,
 characterized in that
the metaiide detector unit can be operated by the method of pulse measurement and / or by the method of alternating current measurement with an alternating frequency. Device according to claim 4,
 characterized in that
 the primary coil generates the transmission field at a transmission frequency, and the transmission frequency exceeds or more than several times the frequency of the transmission.
6. System for power transmission with a device according to one of
 preceding claims and with a vehicle,
 characterized in that
 electrical power is inductively transferable to the vehicle,
 the secondary unit is covered by the vehicle and is located in the area of the underbody of the vehicle,
 - the primary unit is located outside the vehicle, and
 - The metal detector unit is included by the primary unit or the secondary unit.
PCT/EP2013/055812 2012-03-30 2013-03-20 Device for inductively transmitting power WO2013143939A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE102012205285.2 2012-03-30
DE102012205285A DE102012205285A1 (en) 2012-03-30 2012-03-30 Device for inductive power transmission

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201380023819.3A CN104271387B (en) 2012-03-30 2013-03-20 Device for induction type power transmission
US14/500,346 US9912167B2 (en) 2012-03-30 2014-09-29 Device for inductively transmitting power

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US14/500,346 Continuation US9912167B2 (en) 2012-03-30 2014-09-29 Device for inductively transmitting power

Publications (1)

Publication Number Publication Date
WO2013143939A1 true WO2013143939A1 (en) 2013-10-03

Family

ID=47988959

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/055812 WO2013143939A1 (en) 2012-03-30 2013-03-20 Device for inductively transmitting power

Country Status (4)

Country Link
US (1) US9912167B2 (en)
CN (1) CN104271387B (en)
DE (1) DE102012205285A1 (en)
WO (1) WO2013143939A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013219131B4 (en) 2013-09-24 2018-07-19 Siemens Aktiengesellschaft Device and method for detecting a foreign body in a magnetic field intended for conduction-free energy transfer
DE102014207253B4 (en) 2014-04-15 2019-03-28 Siemens Aktiengesellschaft Device for checking the presence of an electrically conductive body and charging device for inductively charging an electric vehicle
DE102014207427A1 (en) * 2014-04-17 2015-10-22 Bombardier Transportation Gmbh Device and method for detecting a disturbing body in a system for inductive energy transmission and system for inductive energy transmission
US20150365135A1 (en) * 2014-06-11 2015-12-17 Enovate Medical, Llc Authentication for wireless transfers
DE102015212947A1 (en) * 2015-07-10 2017-01-12 Siemens Aktiengesellschaft Device for checking the presence of an electrically conductive body and the charging arrangement including the device
JP2017099239A (en) * 2015-11-27 2017-06-01 キヤノン株式会社 Power transmission device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0923182A2 (en) * 1997-12-09 1999-06-16 Hiroshi Sakamoto Non-contact power transmitting device
JP2002277441A (en) * 2001-03-21 2002-09-25 Glory Ltd Metallic thread detector and paper money counter therewith
FR2947114A1 (en) 2009-06-17 2010-12-24 Renault Sas Charger emitter for charging battery to supply power to motor vehicle, has primary coil provided for contactless transmission of power towards secondary coil and including surface higher than or equal to specific value in meter square
DE102009033237A1 (en) * 2009-07-14 2011-01-20 Conductix-Wampfler Ag Device for inductive transmission of electrical energy
WO2011036863A1 (en) * 2009-09-24 2011-03-31 パナソニック電工株式会社 Noncontact charger system
WO2013036947A2 (en) * 2011-09-09 2013-03-14 Witricity Corporation Foreign object detection in wireless energy transfer systems

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2550688A (en) * 1949-03-19 1951-05-01 Rca Corp Metal detection apparatus
WO2004086095A1 (en) 2003-03-12 2004-10-07 Anritsu Industrial Solutions Co., Ltd. Metal detector
DE502005003976D1 (en) * 2005-03-24 2008-06-19 Siemens Ag Inductive rotary transformer
JP4772744B2 (en) * 2007-05-17 2011-09-14 国立大学法人東北大学 Signal transmission coil communication device for non-contact power feeding device
JP2011211760A (en) 2010-03-26 2011-10-20 Panasonic Corp Contactless power supply device and contactless charging system
JP2012016125A (en) * 2010-06-30 2012-01-19 Panasonic Electric Works Co Ltd Non-contact power supply system, and metal foreign substance detector of non-contact power supply system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0923182A2 (en) * 1997-12-09 1999-06-16 Hiroshi Sakamoto Non-contact power transmitting device
JP2002277441A (en) * 2001-03-21 2002-09-25 Glory Ltd Metallic thread detector and paper money counter therewith
FR2947114A1 (en) 2009-06-17 2010-12-24 Renault Sas Charger emitter for charging battery to supply power to motor vehicle, has primary coil provided for contactless transmission of power towards secondary coil and including surface higher than or equal to specific value in meter square
DE102009033237A1 (en) * 2009-07-14 2011-01-20 Conductix-Wampfler Ag Device for inductive transmission of electrical energy
WO2011036863A1 (en) * 2009-09-24 2011-03-31 パナソニック電工株式会社 Noncontact charger system
US20120146580A1 (en) * 2009-09-24 2012-06-14 Panasonic Corporation Noncontact charger system
WO2013036947A2 (en) * 2011-09-09 2013-03-14 Witricity Corporation Foreign object detection in wireless energy transfer systems
US20130069441A1 (en) * 2011-09-09 2013-03-21 Witricity Corporation Foreign object detection in wireless energy transfer systems

Also Published As

Publication number Publication date
US20150015086A1 (en) 2015-01-15
US9912167B2 (en) 2018-03-06
CN104271387A (en) 2015-01-07
CN104271387B (en) 2017-12-15
DE102012205285A1 (en) 2013-10-02

Similar Documents

Publication Publication Date Title
CA2766854C (en) Device for inductive transmission of electrical energy
US9417199B2 (en) Method and system of wireless power transfer foreign object detection
EP2845290B1 (en) System and method for triggering power transfer across an inductive power coupling and non resonant transmission
EP2755301B1 (en) Non-contact power supply method used to recharge a vehicle
JP6185472B2 (en) Foreign object detection in wireless energy transmission systems
US8947045B2 (en) Method for controlling power transmission in wireless power transmission apparatus and wireless power transmission apparatus thereof
JP5484843B2 (en) Contactless charging system
CN104521151B (en) The method and apparatus that metal objects are detected in predetermined space
US9404954B2 (en) Foreign object detection in wireless energy transfer systems
JP6019103B2 (en) Antenna alignment and vehicle guidance for wireless charging of electric vehicles
JP5083480B2 (en) Non-contact power supply facility, vehicle, and control method for non-contact power supply system
EP2909061B1 (en) System and method for inductance compensation in wireless power transfer
US10371848B2 (en) Foreign object detection in wireless energy transfer systems
CN102548789B (en) Sensing means for supplying electric power
EP2442431B1 (en) Electronic apparatus, power feeding method, and power feeding system
US9553636B2 (en) Contactless electricity supply device with foreign object detector
JP5838768B2 (en) Sensing device, power receiving device, non-contact power transmission system, and sensing method
KR20170035912A (en) Guidance and alignment system and methods for electric vehicle wireless charging systems
CN103178622B (en) Signal supervisory instrument and the Contactless power transmission device for possessing it
CN103380562B (en) A moving body with a non-contact power feeding device
JP2012044735A (en) Wireless charging system
JP2013027171A (en) Detection device, electricity receiver, electricity transmitter, contactless power transmission system, and detection method
US9921045B2 (en) Systems, methods, and apparatus for increased foreign object detection loop array sensitivity
US9260026B2 (en) Vehicle to wireless power transfer coupling coil alignment sensor
US9631950B2 (en) Method and apparatus for aligning a vehicle with an inductive charging system

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13711658

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase in:

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13711658

Country of ref document: EP

Kind code of ref document: A1